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. 2016 Jul 22;6(3):38. doi: 10.3390/bios6030038

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Differential-pulse stripping analysis of cadmium and lead with (A) Bi/PO₄/Naf at pH = 4.4 and (B) Bi/PO₄/PSS(A) at pH = 2. Calibration curves for Cd and Pb are shown in the insert.